A mysterious gravitational wave appeared!

 According to foreign media(replica hermes) reports, what happens when a black hole falls into a wormhole? The latest research speculates that if the wormhole really exists, it can swallow a black hole. Astronomers believe that they may use the space-time ripples called gravitational waves to detect the black hole falling into the wormhole, but only if the wormhole does exist and the event that the wormhole swallows the black hole may have occurred.

Einstein first predicted the existence of gravitational waves in 1916. According to his point of view, gravity is generated when mass distorts space-time. When two or more celestial bodies move within a gravitational wave, gravitation propagating at the speed of light will be generated. Waves stretch and squeeze time and space during movement.

　　Because gravitational waves are very weak, they are difficult to detect, and even Einstein is not sure whether they really exist and whether they can be detected. After decades of research by scientists, in 2016, scientists reported that the use of laser interference gravitational wave observatory (LIGO) to detect the first direct evidence of the existence of gravitational waves.

　　 black hole vs wormhole

At present, the Gravitational Wave Observatory has detected more than 20 large-scale collision events, such as collisions between black holes and neutron stars and other ultra-dense and massive celestial bodies. However, theoretically there may be more exotic celestial bodies, such as wormholes and wormholes. Collision also generates gravitational signals that scientists can detect.

　　 Wormholes are tunnels in time and space. In theory, they can travel in any region of time and space, or even enter another universe. Einstein's general theory of relativity allows wormholes to exist, although whether they exist is another matter.

　　 In principle, all wormholes are unstable, and once opened, they close immediately. The only way to keep the wormhole open and passable is to take the strange form of so-called "negative mass" matter, which has unique properties, including flying away from a standard gravitational field instead of falling toward it like ordinary matter. In fact, no one really knows whether these strange substances exist.

　　 In many ways, wormholes are similar to black holes. Both types of celestial bodies are very dense and they have strong gravitational attraction. The main difference between the two is that in theory, no matter can return to the wormhole again after entering the black hole. The gravity of the black hole exceeds the critical speed of the speed of light, and any object entering the wormhole can theoretically move in the opposite direction.

　　 Assuming that a wormhole may exist, scientists have studied the gravitational signal generated when a black hole orbits the wormhole and published a paper report exploring and analyzing what happens when the black hole enters the wormhole? Do you leave from the other end of the wormhole and enter the other end of time and space? Assuming that the black hole and the wormhole are gravitationally combined with each other, the black hole falls into the wormhole, and then it will appear at the other end of the wormhole.

　　 can't escape

　　In the computer model, the researchers analyzed the interaction between a black hole with 5 times the mass of the sun and a wormhole with 200 times the mass of the sun. The entrance diameter of the wormhole is 60 times the diameter of the black hole, and the black hole can stably pass through the wormhole. The final simulation results show that as the black hole enters and leaves the wormhole, there will be gravitational signals that have not been detected so far.

　　 When two black holes spiral close to each other, their orbital speed will increase, just as a figure skater tightens his arms toward the inside of the body when rotating his body on the ice. Conversely, the frequency of gravitational waves will increase. The sound produced by gravitational waves is similar to the sound of a bird, like someone whistling quickly, because any increase in frequency corresponds to an increase in the pitch.

If you observe a black hole spiraling into a wormhole, you will hear a bird chirping sound, like two black holes colliding together, but the gravitational waves from the black hole will decay rapidly because it radiates most of the gravitational waves To the other end of the wormhole. On the contrary, when two black holes collide, the result is a huge explosion of gravitational waves.

If you see a black hole emerging from a wormhole, you will find a "chirp". Specifically, when the black hole moves away from the wormhole, the gravitational wave frequency will decrease, as the black hole continues to enter and exit each port of the wormhole , There will be a cycle of chirps and counter chirps. The length of time between each chirp and counter chirp will decrease over time until the black hole is stuck somewhere in the wormhole. If this gravitational signal can be detected, it can prove the existence of a wormhole.

Research report co-author William Gabella (William Gabella), a physicist at Vanderbilt University in the United States, said: "Although the concept of wormholes is extremely speculative, we have the ability to prove or at least provide for their existence. A certain degree of credibility."

　　 In this case, eventually the black hole will stop falling into and out of the wormhole and stay near the "throat" in the black hole. This final outcome depends on the speculative properties of the strange substance found in the wormhole "throat". One possibility is that the black hole effectively increases the mass of the wormhole, and the wormhole may not have enough foreign matter to remain stable. Gabeira said: “Perhaps the space-time chaos caused by this will cause the black hole to send a large number of gravitational waves. Mass is converted into energy."

Gabela said: “As long as the mass of the wormhole is greater than any black hole it encounters, it will remain stable. If the wormhole encounters a larger black hole, the black hole may destroy the wormhole’s foreign matter, which can completely make the wormhole. It becomes unstable and even causes the wormhole to collapse and may form a new black hole."

　　 If a black hole only cuts off the edge of the wormhole, part of the black hole enters the wormhole port, and the rest stay outside the wormhole, there is still uncertainty about what will happen at this time. Gabella said: "I suspect that there are some crazy phenomena in the black hole horizon, leading to more gravitational waves and energy loss. Such collisions may destroy the foreign matter in the wormhole and cause the wormhole to become unstable."

　　 Future research can explore the interaction between foreign matter and normal matter in the wormhole, as well as more complex situations, such as what happens when the wormhole rotates. Gabella said that other research directions can analyze how gravitational waves interact with normal and foreign matter under these conditions, as well as the possible changes between wormholes and the orbits of various celestial bodies that may exist.